Electric bell.



No. 802,675. PATENTED OCT. 24, 190

' G. E. AVEH I.

ELECTRIC BELL.

APPLICATION FILED MAR. 16. 1904.

CHARLES E. AVERY, OF JERSEY CITY,

new JERSEY, ASSlGNGit TO iii IAN HAT'TAN ELEUFRHJAL SUPPLY COiii'PJ-XNY, A CORPORAT101i Old NEW JERSEY.

t. ti; 'i"

Filth"; filiilsllm Eipecification of Letters Patent.

Patented Oct, 24:, 1905 Application and March 16, 190 i. Serial No.198,415.

To all who/rt (it Tit/1,71 concern:

Be it known that I, (maniacs E. Avicni', a citizen of the United States,and a resident oi the city of Jersey City, Hudson county, New Jersey,have invented certain new and useful Improvements in Electric Bells, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying: drawings, forming a part of thisspeciiication.

My invention relates to electric hells oi the suspended type, and oneobject thereof is the provision oi means by which the proper electriccircuits may be established by simply hanging the bell on its support,from which it maybe removed without the necessity of unfastening thecircuit-wires, which are all concealed and do not interfere with the op.erationof the bell.

My invention also comprises certain other novel features ofconstruction, which are hereinafter described and claimed.

in the drawings, Figure 1 is a sectional elevation showing myimprovements. Fig. 2 is a detail, partly in section, on an enlargedscale, showing the arrangement of the ci rcuitterminals. Fig. 3 is adetail, on a similar scale, showingthe manner of connecting thecircuit-wires. Fig. 4 is a sectionai elevation, also on an enlargedscale, showing; the contacts and a portion of the bell mechanism; andFigs. 5. and 6' show details otthe armature-supporting devices.

Similar reference characters are employed to designate like parts in allthe views.

The drawings show a practical embodiment of my invention in a preferredform; but it will be understood that in selecting this particularembodiment of myinvention for illustrative and descriptive purposes 1 donot in tend to limit the same to the details of construction andarrangement further than as hereinafter expressly provided.

The bell lis operated by a clapper 2., which is corn'iccted with thevibrating armature 3, pivotally suspended from the crown of the bell, aswill be more fully described hereinafter. A magnet 5, provided with thepolar extension (3, is also suspended within the hell by means of a post7, which extends through an aperture in the crown of the bell. A hanger9 is iitted to the projecting end ol the post 7, and the nut 10 clampsthe post 7 and the banner 9 securely to the crown of the bell.

The post 7, which is preferably a continua;

horizontal groove 11. The upper or horizontal member of the armature 3is slotted to en l i n I I tion of the magnet-core, 18 provided with a lcircle the post 7, and one edge of the slot is .shaped to project intothe groove 11 to form a firm pivotal bearing for the armature, and, whatit also consider important, an efiieient magnetic circuit is formed byreason of the extended cont-act thus provided between the armature andthe extension or continuation of the magnetrore. The sides of thearmatnre are provided with vertical slots 12, into which loosely enterthe lugs 13 on the collar 1-1;, carried by the post 7. These lugs bypreventinglateral movement of the armature hold it in the groove 11. Bythis construction also these parts of the hell-operatime mechanism maybe inexpensively constructed and readily assembled.

The post 7 is eonnterbored to rcceivcan insulatingq'ilug 15, whichsupports a contactstud 16. The stud 16 connected with one tern'linal ofthe magnet-coils by the wire 17, extending through the post 7. The stud16 and wire 17 are insulated from the post 7, and conseqmimtly. from thebell and the mag"- net-supporting devices.

The opposite terminal of the magnet-coils is connected by the wire 18 tothe armaturecontact arm 19, which may be stamped from a single piece ofmetal and is secured in position by having its edges bent over theinsulated head oi the magnet 20. A springtongue 21 on the armaturenormally held against the arrnature-contact by the weight of the hammer2, thus normally forming a metallic connection tl'lrough the armature 3and post 7 to the hanger 9.

The arm 25 is secured, as by screws 26, to a plate 27, which may befastened to any suitable support. The arm 25 is hollow and is providedwith an aperture 28, behind which in an aperture in the plate is securedan insulating-block 29 by the binding-screw 30, Fig. 3, which passesthrough the block 52$) into the end of the arm 25 and to which one ofthe generator-circuit wires is connected. The arm 25 and its hook 32thus form one terminal of the circuit. The other wire of thegenerator-circuit is connected with the hurtling-screw 33, carried bythe insulatingblock 28}. rvithin the hollow arm 25 is the insulatedcontluctingwvire 34-, one end oitwhich is connected with thebinding-screw S3, and the other end, passing through a hole in the arm25, is clamped between the metallic spring-tongue 36 and theinsulating-strip 37 by the screw 38. The tongue 36 is completelyinsulated from the arm 25 and book 32 by the strip 37, which ispreferably formed of fiber or other similar material pressed into shape.The metallic tongue 36 thus forms the other terminal of thegenerator-circuit and is so shaped and adjusted that when the hanger 9of the bell is placed on the hook 32 the tongue 36 will be held againstthe top of the stud 14 with sufiicient pressure to form a perfectelectrical contact.

With the bell hung in position as shown in Fig. 1, if the circuit beclos'ed'by means of any suitable switch the magnet 5 will be energizedto vibrate the armature 3 and clapper 2 and continuously ring the bellin a manner well understood by those skilled in the art, it being, ofcourse, understood that my invention is not intended to be limited to avibrating or continuous ringing bell, it being equally well adapted forother well-known forms of bell-actuating mechanism.

The bell may be suspended instantlyin operative position just asassembled at the factory without requiring the connection of-any wiresand may be instantly removed by simply lifting it from the hook.Moreover, the bell will always hang free and true, which is essential toits satisfactory operation, and the appearance of the bell is also muchenhanced by the concealment of the circuit-Wires.

Having thus shown and described my invention, what I claim as new, anddesire to scour by Letters Patent, isv 1. The combination of a hollowarm provided with a bell-support adapted to be connected with one wireof the circuit, a conducting-spring carried by said arm, a connectionfor said spring extending through the arm and adapted to be connectedwith the other wire of the circuit, insulating means between the arm andthe conducting-spring, and contacts carried by the bell, formingterminals for the magnet-circuit and arranged to contact with thebell-support and the conducting-spring when the bell is hung inposition.

2. The combination of a hollow arm provided with a bell-supporting hookadapted to be connected with one wire of the generator- -circuit, aconducting-spring carried by said arm below the hook and insulatedtherefrom, a connection for said spring extending through the arm andadapted to be connected with the.

otherwire of the generator-circuit, a hanger secured to the bell andforming one terminal of the magnet circuit, and a contact carried by thebell forming the other terminal of the magnet-circuit, said hanger beingarranged to engage the hook to support the bell and said contact beingarranged to engage said spring when the bell is so supported.

3. In an electric bell, the combination of a post which suspends thebell-magnet from the crown of the bell, an armature provided with a slotthrough which the post extends, a transverse groove in the post arrangedto receive one edge of the armature-slot to form a pivoted bearing forthe armature, and cooperating lugs and slots on the post and armature tohold the armature in its bearing.

CHARLES E. AVERY.

itnesses:

FREDERICK WV. Manama, O. H. I'IUIGBIGL.

